When you integrate with Google Analytics, marketing cloud will add tags to all your links. When this happens, all dynamic links will be broken.
Links that are defined programmatically as variable, field or attribute with GA integrated will look as if the tracking link also appends google analytics tags. This will make such link not behave the way we would expected
Good practice is to wrap all links that are created dynamically in the function RedirectTo
%%[ SET @link = "https://google.com/search?q=martechnotes" ]%% %%=RedirectTo(v(@link)))=%%